GB573591A - Improvements in or relating to the production of alginic acid compounds - Google Patents

Improvements in or relating to the production of alginic acid compounds

Info

Publication number
GB573591A
GB573591A GB911842A GB911842A GB573591A GB 573591 A GB573591 A GB 573591A GB 911842 A GB911842 A GB 911842A GB 911842 A GB911842 A GB 911842A GB 573591 A GB573591 A GB 573591A
Authority
GB
United Kingdom
Prior art keywords
alginic acid
acid
benzene
soaked
water
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB911842A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CEFOIL Ltd
Original Assignee
CEFOIL Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by CEFOIL Ltd filed Critical CEFOIL Ltd
Priority to GB911842A priority Critical patent/GB573591A/en
Publication of GB573591A publication Critical patent/GB573591A/en
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F9/00—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments
    • D01F9/04—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments of alginates

Abstract

Alginic acid derivatives are produced by first swelling in an aqueous medium, then displacing the water by an organic liquid while maintaining the swollen state, and finally treating with the necessary reagents for preparing the derivative. The alginic acid may be in powder, film or fibrous form. In examples: (1) alginic acid yarn is soaked in water, then treated with successive charges of glacial acetic acid and finally acetylated with acetic anhydride, benzene and sulphuric acid, the benzene being a non-solvent; the product may be purified with benzene and ether; (2) alginic acid powder is treated similarly; (3) the displacing of the water is effected with methyl alcohol; (4) and (5) alginic acid yarn is soaked in normal sulphuric and perchloric acid respectively, dehydrated with acetic acid and acetylated with acetic anhydride and benzene; (9) alginic acid yarn is soaked in normal perchloric acid, dehydrated with acetic acid, and esterified with propionic anhydride and benzene. The production of butyrate and acetobutyrate esters is mentioned. Specification 19330/05, [Class 2], is referred to.
GB911842A 1942-07-01 1942-07-01 Improvements in or relating to the production of alginic acid compounds Expired GB573591A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB911842A GB573591A (en) 1942-07-01 1942-07-01 Improvements in or relating to the production of alginic acid compounds

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB911842A GB573591A (en) 1942-07-01 1942-07-01 Improvements in or relating to the production of alginic acid compounds

Publications (1)

Publication Number Publication Date
GB573591A true GB573591A (en) 1945-11-28

Family

ID=9865710

Family Applications (1)

Application Number Title Priority Date Filing Date
GB911842A Expired GB573591A (en) 1942-07-01 1942-07-01 Improvements in or relating to the production of alginic acid compounds

Country Status (1)

Country Link
GB (1) GB573591A (en)

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